Final answer:
Acceptance of a stoma is best indicated by the client's active participation in stoma care, willingness to engage in social interactions, and a positive attitude towards incorporating the stoma into their self-image without distress.
Step-by-step explanation:
The best indicator that a client has accepted their stoma is when they take an active role in their stoma care, including participating in cleaning and maintenance, and when they display a willingness to learn and ask questions about managing their stoma. Acceptance is also shown when the client starts to engage in normal activities and social interactions without excessive concern about the stoma affecting their public image or lifestyle. Furthermore, a positive attitude towards living with a stoma and incorporating it into their self-image without significant psychological distress is a good indication of acceptance.